圖片代替滾動(dòng)條_瀏覽器特效

用圖片代替滾動(dòng)條，嚴(yán)格來說是用JS和CSS虛擬出的框架效果，不少朋友挺喜歡的，不過代碼有點(diǎn)多喲，實(shí)用性不知怎么樣。

<html>
<head>
<title>圖片代替滾動(dòng)條</title>
<meta http-equiv="Content-Type" mrc="text/html; charset=gb2312">
<STYLE type=text/css>
#scrollerContent {POSITION: absolute}
body {font-size:9pt;color:#660000;text-decoration: none}
</STYLE>
<script>
var upH = 13;//向上的箭頭的高度
var upW = 9; //向上的箭頭的寬度
var downH = 13;//向下的箭頭的高度
var downW = 9;//向下的箭頭的寬度
var dragH = 26; //滾動(dòng)條的高度
var dragW = 9; //滾動(dòng)條的寬度
var scrollH =68; //滾動(dòng)體的高度
var speed =9; //滾動(dòng)的速度
var dom = document.getElementById ? true:false;
var nn4 = document.layers ? true:false;
var ie4 = document.all ? true:false;
var mouseY;
var mouseX;
var clickUp = false;
var clickDown = false;
var clickDrag = false;
var clickAbove = false;
var clickBelow = false;
var timer = setTimeout("",500);
var upL;
var upT;
var downL;
var downT;
var dragL;
var dragT;
var rulerL;
var rulerT;
var mrcT;
var mrcH;
var mrcClipH;
var scrollLength;
var startY;
function down(e){
if((document.layers && e.which!=1) || (document.all && event.button!=1)) return true;
getMouse(e);
startY = (mouseY - dragT);
if(mouseX >= upL && (mouseX <= (upL + upW)) && mouseY >= upT && (mouseY <= (upT + upH))){
clickUp = true;
return scrollUp();
}
else if(mouseX >= downL && (mouseX <= (downL + downW)) && mouseY >= downT && (mouseY <= (downT + downH))){
clickDown = true;
return scrollDown();
}
else if(mouseX >= dragL && (mouseX <= (dragL + dragW)) && mouseY >= dragT && (mouseY <= (dragT + dragH))){
clickDrag = true;
return false;
}
else if(mouseX >= dragL && (mouseX <= (dragL + dragW)) && mouseY >= rulerT && (mouseY <= (rulerT + scrollH))){
if(mouseY < dragT){
clickAbove = true;
clickUp = true;
return scrollUp();
}
else{
clickBelow = true;
clickDown = true;
return scrollDown();
}
}
else{
return true;
}
}
function move(e){
if(clickDrag && mrcH > mrcClipH){
getMouse(e);
dragT = (mouseY - startY);
if(dragT < (rulerT))
dragT = rulerT;
if(dragT > (rulerT + scrollH - dragH))
dragT = (rulerT + scrollH - dragH);
mrcT = ((dragT - rulerT)*(1/scrollLength));
mrcT = eval('-' + mrcT);
moveTo();
if(ie4)
return false;
}
}
function up(){
clearTimeout(timer);
clickUp = false;
clickDown = false;
clickDrag = false;
clickAbove = false;
clickBelow = false;
return true;
}
function getT(){
if(ie4)
mrcT = document.all.scrollerContent.style.pixelTop;
else if(nn4)
mrcT = document.scrollerContentClip.document.scrollerContent.top;
else if(dom)
mrcT = parseInt(document.getElementById("scrollerContent").style.top);
}
function getMouse(e){
if(ie4){
mouseY = event.clientY + document.body.scrollTop;
mouseX = event.clientX + document.body.scrollLeft;
}
else if(nn4 || dom){
mouseY = e.pageY;
mouseX = e.pageX;
}
}
function moveTo(){
if(ie4){
document.all.scrollerContent.style.top = mrcT;
document.all.ruler.style.top = dragT;
document.all.drag.style.top = dragT;
}
else if(nn4){
document.scrollerContentClip.document.scrollerContent.top = mrcT;
document.ruler.top = dragT;
document.drag.top = dragT;
}
else if(dom){
document.getElementById("scrollerContent").style.top = mrcT + "px";
document.getElementById("drag").style.top = dragT + "px";
document.getElementById("ruler").style.top = dragT + "px";
}
}
function scrollUp(){
getT();
if(clickAbove){
if(dragT <= (mouseY-(dragH/2)))
return up();
}
if(clickUp){
if(mrcT < 0){
dragT = dragT - (speed*scrollLength);
if(dragT < (rulerT))
dragT = rulerT;
mrcT = mrcT + speed;
if(mrcT > 0)
mrcT = 0;
moveTo();
timer = setTimeout("scrollUp()",25);
}
}
return false;
}
function scrollDown(){
getT();
if(clickBelow){
if(dragT >= (mouseY-(dragH/2)))
return up();
}
if(clickDown){
if(mrcT > -(mrcH - mrcClipH)){
dragT = dragT + (speed*scrollLength);
if(dragT > (rulerT + scrollH - dragH))
dragT = (rulerT + scrollH - dragH);
mrcT = mrcT - speed;
if(mrcT < -(mrcH - mrcClipH))
mrcT = -(mrcH - mrcClipH);
moveTo();
timer = setTimeout("scrollDown()",25);
}
}
return false;
}
function reloadPage(){
location.reload();
}
function eventLoader(){
if(ie4){
upL = document.all.up.style.pixelLeft;
upT = document.all.up.style.pixelTop;
downL = document.all.down.style.pixelLeft;
downT = document.all.down.style.pixelTop;
dragL = document.all.drag.style.pixelLeft;
dragT = document.all.drag.style.pixelTop;
rulerT = document.all.ruler.style.pixelTop;
mrcH = parseInt(document.all.scrollerContent.scrollHeight);
mrcClipH = parseInt(document.all.scrollerContentClip.style.height);
}
else if(nn4){
upL = document.up.left;
upT = document.up.top;
downL = document.down.left;
downT = document.down.top;
dragL = document.drag.left;
dragT = document.drag.top;
rulerT = document.ruler.top;
mrcH = document.scrollerContentClip.document.scrollerContent.clip.bottom;
mrcClipH = document.scrollerContentClip.clip.bottom;
}
else if(dom){
upL = parseInt(document.getElementById("up").style.left);
upT = parseInt(document.getElementById("up").style.top);
downL = parseInt(document.getElementById("down").style.left);
downT = parseInt(document.getElementById("down").style.top);
dragL = parseInt(document.getElementById("drag").style.left);
dragT = parseInt(document.getElementById("drag").style.top);
rulerT = parseInt(document.getElementById("ruler").style.top);
mrcH = parseInt(document.getElementById("scrollerContent").offsetHeight);
mrcClipH = parseInt(document.getElementById("scrollerContentClip").offsetHeight);
document.getElementById("scrollerContent").style.top = 0 + "px";
}
scrollLength = ((scrollH-dragH)/(mrcH-mrcClipH));
if(nn4){
document.captureEvents(Event.MOUSEDOWN | Event.MOUSEMOVE | Event.MOUSEUP);
window.onresize = reloadPage;
}
document.onmousedown = down;
document.onmousemove = move;
document.onmouseup = up;
}
</script></head>
<BODY
onload="eventLoader()">
<IMG
height=26 src="slider.gif" width=9 border=1> <IMG
height=13 alt="" src="scrollup.gif" width=9 border=1> <IMG
height=13 alt="" src="scrolldown.gif" width=9 border=1> 
 


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</body>
</html>

所屬頻道：瀏覽器特效/更新時(shí)間：2013-04-16

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特效說明：
瀏覽器模板-圖片代替滾動(dòng)條。

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圖片代替滾動(dòng)條_瀏覽器特效

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